Well, as for his comments on Silvermoon, i found it to be quite a playable city. Yeah there are long walking distances, but Stormwind has them too, being all segmented and that, and Silvermoon is just one of the most beautiful things in the game. The reason it's empty is hardly its design, but location. It's just out of everyone's way, only low level blood elves and jewelcrafters have reasons to go there. For everything else, you go to Orgrimmar. Undercity is also empty. So is Darnassus and Exodar, because they are also secluded. Nothing wrong with the cities themselves.